mccormiok



(No Model.)

2 Sheets-Sheet 1. E. MCCORMICK WASTE COMPRESSION 000K.

N10. 257,232. Patented May 2,1882.

- WILTueSSeS {m /e22 Ebr- 2 Sheets-Shet 2.

(N0 Model.)

B. W. lVIoGORMIGK.

WASTE COMPRESSION 000K.

Patented May 2,1882.

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NITED STATES PATENT OFFICE.

EDWARD W. MCCORMICK, OF NEW YORK, N. Y., ASSIGNOR TO CHARLES HARRISON, OF SAME PLACE.

WASTE COMPRESSION-COCK.

SPECIFICATION forming part of Letters Patent No. 257,232, dated May 2, 1882.

Application filed February 6, 1882. (No model.)

To all whom it may concern:

Be it known that I, EDWARD W. McOoR- MICK, of the city and State of New York, have invented an Improvement in aste Compression-Cocks, of which the following is a speciflcation.

It is the object of my improvement to effect the closing of the waste-outlet of a compression-cock by the lifting of the valve-plug from its seat. I accomplish this object by means of a loose wedge bearing upon an inwardly and upwardly inclined planeformed upon the side of the valve-plug adjacent to the wasteoutlet. The wedge drops below the waste-outlet when the valve'plug rests upon its seat,

but when the valve-plug is lifted is'carried up and binds between the inclined side of the plug and the part of the wall of the valvechamber which is performed by the waste-outlet.

The accompanying drawings, representing a compression-cock containing my improvements, are as follows:

Figure l is a side elevation, partly in section, showing the valve-plug lifted from its seat. Fig.2 is atransverse section through the line 00 m on Fig. 1, also showing the valve-plug lifted from its seat. Fig. 3 is a similar section, showing the valveplug bearing upon its seat, the valve-stem in Figs. 1, 2, and 3 being represented in elevation. Fig. 4 is a front elevation of the wedge, and Fig. 5 is an elevation of the side of the valve-plug upon which the wedge bears.

The drawings represent a compression-cock, the shellA and the valve-chamberB of which are of ordinary form.

The raising and lowering of the valve-plug O for the purpose of opening or closing the cock are effected by the usual actuating screwstem, D, having its bearing in the cap B of the valve-chamber. When the valve-plug O is lowered upon the valve'seat G the waste water escapes from the valve-chamber through the outlet E; but when the valve-plugis raised from its sea-t the waste-outlet E is closed by the wedge F, the outer face of which bears upon the wall of the valve-chamber and extends over the mouth of the waste-outlet.

The usual packing is provided between the top of the valve-chamber and its cap, and for the shank of the screw-stem.

The valve-plug O is a cylinder with flattened sides. Opposite portions of the wall of the valve-chamber are correspondingly flattened.

tained between the inwardly and upwardly inclined side of the valve-plug and the flattened portion E of the wall of the valve-chamber.

The wedge F is provided at its upper end with a recess,f, to admit the tongue 0, which projects from the upper part of the inclined side of the valve-plug. The tongue 0, by its engagement with the sides and bottom of the recess f in the upper end of the wedge, serves to hold the wedge in proper vertical alignment, and also to push the wedge downward when the valve-plug is lowered, in case the wedge does not fall by its own gravity. When the valve-plug is raised the wedge F is carried up until its upper end comes into collision with the washer B at the top of the valve-chamher, after which the further upward movement of the valve-plug serves to tighten the wedge firmly against the flattened portion E of the wall of the valve-chamber, and thus completely close the waste-outlet, across the mouth of which the wedge F has been carried by the raising of the valve-plug.

It will be seen that the wedge F is a valve as regards the waste-outlet, and that'the motions required for operating it are resultants of the motion of the compression-valve plug G, and hence that the screw'stem Dis the com- IllOIl actuator of the main valve or valve-plug G of the waste-outlet valve or wedge F.

I claim as my invention- In a compression-cock, the combination of the actuating-stem D, the valve-plug O, and the wedge F for closing the waste-outlet, substantially as set forth.

E. w. MCCORMICK.

Witnesses:

J AS. B. RowLEY, WM. P. Towns. 

